online audio test

https://getcheckmicvolumeleveldigest.juniperbrief.com/posts/how-to-check-mic-volume-level-for-optimal-audio-quality

I needed to quickly check if my microphone was working before a video call, so I ran an online audio test. The tool played a short tone and recorded it back, letting me compare the input and output. It caught a slight echo issue that I fixed by adjusting my headset settings.